Supporting Documentation: Information related to the development of this proposal can be found on the electronic docket at www.regulations.gov. (NOTE: To access the docket, select Advanced Search, then Docket Search, and type EPA-HQ-OAR-2007-0121 as the Docket ID.)

Supporting Documentation: Information related to the development of this proposal can be found in the electronic docket at www.regulations.gov. NOTE: To access the docket, select Advanced Search and enter "EPA-HQ-OAR-2004-0008" as the Docket ID, then select "Open Docket Folder"

Advance Notice of Proposed Rulemaking (ANPRM): Control of Emissions from New Marine Compression-Ignition Engines at or Above 30 Liters per Cylinder (published December 7, 2007)

Change in Regulatory Deadline for Rulemaking to address the Control of Emissions from New Marine Compression-Ignition Engines at or Above 30 Liters per Cylinder (Final December 5, 2007, Proposed April 27, 2007)

Supporting Documentation: Information related to the development of this proposal can be found on the electronic docket at www.regulations.gov. (NOTE: To access the docket, select Advanced Search, then Docket Search, and type EPA-HQ-OAR-2003-0190 as the Docket ID.)

Proposed Rule: Control of Emissions of Air Pollution from New Marine Compression-Ignition Engines At or Above 30 Liters/Cylinder (Tier 1 Category 3 Marine Diesel Engine Proposal published May 29, 2002)

Tier 2 and Tier 3 Proposed Emission Standards

Statement of Principles to Control Emissions of Air Pollution from Nonroad Diesel Engines - Supplemental Advance Notice of Proposed Rulemaking
Availability of the Statement of Principles (SOP) for nonroad diesel engines which was signed by EPA, the California Air Resources Board, and members of the nonroad diesel engine industry. The SOP calls for significantly more stringent standards for emissions of NOx, HC, and PM from diesel engines used in most land-based nonroad equipment and some marine applications.

Staff Technical Paper for Advanced Technologies in Nonroad Diesel Engines
In 1998, EPA adopted more stringent emissions standards for nonroad diesel engines. In that rulemaking, EPA indicated that in 2001 it would review the upcoming Tier 3 portion of those standards (and the Tier 2 emission standards for engines under 50 horsepower) to assess whether or not the new standards were technologically feasible. This staff technical paper presents the preliminary assessment of the technological feasibility of the Tier 2 and Tier 3 emission standards.

Tier 2 and Tier 3 Emission Standards - Proposed Rule
Proposal for more stringent emission standards for nonroad diesel engines used in construction, agricultural, and industrial equipment and some marine applications. The proposed program would represent a major step toward reducing the harmful health effects of ozone and particulate matter (PM) nationwide.

Proposed Rule (published June 10, 2004) - Control of Emissions of Air Pollution from New Motor Vehicles: In-Use Testing for Heavy-duty Engines and Vehicles

Federal Register Preamble: Control of Emissions of Air Pollution From New Motor Vehicles: In-Use Testing for Heavy-Duty Diesel Engines and Vehicles; Proposed Rule (PDF) ( June 10, 2004) (Can be found at U.S. Government Printing Office)

Fact Sheet: Notice of a Settlement with the Engine Manufacturers Association to propose a manufacturer-run, in-use emissions testing program for heavy-duty diesel trucks and to provide for EPA engine certification guidance.